linux-kernel - [PATCH 2/2] pinctrl: stm32: factorize stm32_pconf_input/output

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Date:	Thu, 12 May 2016 16:46:35 +0200
From:	<patrice.chotard@...com>
To:	<linux-kernel@...r.kernel.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	Maxime Coquelin <mcoquelin.stm32@...il.com>
CC:	<patrice.chotard@...com>
Subject: [PATCH 2/2] pinctrl: stm32: factorize stm32_pconf_input/output_get()

From: Patrice Chotard <patrice.chotard@...com>

As these 2 functions code are 95% similar, factorize them.

Signed-off-by: Patrice Chotard <patrice.chotard@...com>
---
 drivers/pinctrl/stm32/pinctrl-stm32.c | 31 ++++++++++---------------------
 1 file changed, 10 insertions(+), 21 deletions(-)

diff --git a/drivers/pinctrl/stm32/pinctrl-stm32.c b/drivers/pinctrl/stm32/pinctrl-stm32.c
index 249da52..8b82d3e 100644
--- a/drivers/pinctrl/stm32/pinctrl-stm32.c
+++ b/drivers/pinctrl/stm32/pinctrl-stm32.c
@@ -661,8 +661,8 @@ static u32 stm32_pconf_get_bias(struct stm32_gpio_bank *bank,
 	return (val >> (offset * 2));
 }
 
-static bool stm32_pconf_input_get(struct stm32_gpio_bank *bank,
-	unsigned int offset)
+static bool stm32_pconf_get(struct stm32_gpio_bank *bank,
+	unsigned int offset, bool dir)
 {
 	unsigned long flags;
 	u32 val;
@@ -670,23 +670,12 @@ static bool stm32_pconf_input_get(struct stm32_gpio_bank *bank,
 	clk_enable(bank->clk);
 	spin_lock_irqsave(&bank->lock, flags);
 
-	val = !!(readl_relaxed(bank->base + STM32_GPIO_IDR) & BIT(offset));
-
-	spin_unlock_irqrestore(&bank->lock, flags);
-	clk_disable(bank->clk);
-
-	return val;
-}
-
-static bool stm32_pconf_output_get(struct stm32_gpio_bank *bank,
-	unsigned int offset)
-{
-	unsigned long flags;
-	u32 val;
-
-	clk_enable(bank->clk);
-	spin_lock_irqsave(&bank->lock, flags);
-	val = !!(readl_relaxed(bank->base + STM32_GPIO_ODR) & BIT(offset));
+	if (dir)
+		val = !!(readl_relaxed(bank->base + STM32_GPIO_IDR) &
+			 BIT(offset));
+	else
+		val = !!(readl_relaxed(bank->base + STM32_GPIO_ODR) &
+			 BIT(offset));
 
 	spin_unlock_irqrestore(&bank->lock, flags);
 	clk_disable(bank->clk);
@@ -795,7 +784,7 @@ static void stm32_pconf_dbg_show(struct pinctrl_dev *pctldev,
 	switch (mode) {
 	/* input */
 	case 0:
-		val = stm32_pconf_input_get(bank, offset);
+		val = stm32_pconf_get(bank, offset, true);
 		seq_printf(s, "- %s - %s",
 			   val ? "high" : "low",
 			   biasing[bias]);
@@ -805,7 +794,7 @@ static void stm32_pconf_dbg_show(struct pinctrl_dev *pctldev,
 	case 1:
 		drive = stm32_pconf_get_driving(bank, offset);
 		speed = stm32_pconf_get_speed(bank, offset);
-		val = stm32_pconf_output_get(bank, offset);
+		val = stm32_pconf_get(bank, offset, false);
 		seq_printf(s, "- %s - %s - %s - %s speed",
 			   val ? "high" : "low",
 			   drive ? "open drain" : "push pull",
-- 
1.9.1